docs: def decode_mysql_string_literal(text):
      """
      Removes quotes and decodes escape sequences from given MySQL string literal
      returning the result.
  
      :param text: MySQL string literal, with the quotes still included.
      :type text: str
  
      :return: Given string literal with quotes removed and escape sequences
               decoded.
      :rtype: str
      """
      assert text.startswith("'")
      assert text.endswith("'")
  
      # Ditch quotes from the string literal.
      text = text[1:-1]
  
      return MYSQL_STRING_ESCAPE_SEQUENCE_PATTERN.sub(
          unescape_single_character,
          text,
      )